Washing and scouring machine.



No. 823,434. PATENTEDYJUNE 12, 1906. R. F. E. OKRASSA.

WASHING AND SGOURING MACHINE. APPLICATION FILED FEB. 25. 1905.

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No. 823,434. PATENTED JUNE 12, 1906- R. F. E. OKRASSA.

WASHING AND SGOURING MACHINE.

APPLICATION FILED FEB. 25. 1905.

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WASHING AND SCOURING MACHINE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed February 25, 1905. Serial No. 247,293.

1'0 all whom it may concern:

Be it known that I, ROBERTO FRITZ EMIL OKRASSA, a subject of the German Emperor and King of Prussia, and a resident of Antigua, Guatemala, Central America, have invented a new and Improved Washing and Scouring Machine, of which the following is a full, clear, and exact description.

The invention relates to the Washing and scouring of coffee, grain, and like materials; and its object is to provide a new and improved scrubbing-machine arranged to insure a quick and thorough washing and scouring of the coffee, grain, or other material and a complete separation of the washed material from the water or like liquid used as a washing medium.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal sectional elevation of the improvement. Fig. 2 is an enlarged transverse section of the same on the line 2 2 of Fig. 1. Fig. 3 is an enlarged sectional side elevation of the separating device for separating the material from the dirty wash-water, and Fig. 4 is a cross-section of the same on the line 4 4 of Fig. 3.

The cylindrical casing A of the improved washing and scouring machine is provided at or near its middle with a transverse partition B, separating the casing into chambers C and O, in which are mounted to rotate the cylinders D and D, secured on a shaft E, extending centrally through the entire casing and journaled in suitable bearings carried by the heads A and A of the casing. On one outer end of the shaft E is secured a pulley E, connected by belt with other machinery for imparting a rotary motion to the shaft E and its cylinders D and D. The peripheral faces of the cylinders D and D are provided with spiral flutes, and similar spiral flutes are formed on the inner surface of the casing A in the chambers O and O, suflicient space being left between the peripheral surfaces of the cylinders D and D and the inner surface of the casing A for the passage of the material and the liquid used as a washing medium. The head A of the casing A is provided on its top with an inlet A, opening into the outer end of the chamber C, and the inlet A is connected with a vertically-disposed pipe F, having an inlet-chute F connected with a water and material supply, so that the water and material pass under pressure into the outer end of the chamber O to travel along in the space between the cylinder D and the inner surface of the chamber to cause the material to be carried around in a spiral way, and

with it the water, so as to insure a Washing and scouring action of the water on the material. The chambers O and C are connected with each other at the partition B by a separating device G, having a casing G set on the top of the casing A and formed with a channel G connected at its lower end with the discharge end of the chamber C, so that the material and the dirty wash-water rising in the channel G of the casing G, owing to the pressure of the incoming water and material coming from the vertical pipe F, the top of which is above the upper end of the channel G The upper end of the channel G leads to the upper end of a grate G inclined downwardly to allow the dirty wash-water and the material to flow over onto the grate for the water to pass between the grate-bars while the material rolls down the grate bars, thus separating from the dirty wash-water. The dirty wash-water flowing down between the grate-bars passes into an outlet G discharging to one or both sides of the machine, and the material on leaving the lower end of the grate G passes into a channel G leading downward into the entrance of the chamber O, as will be readily understood by reference to Figs. 1 and 3.

From the foregoing it will be seen that the dirty wash-water from the chamber O is separated in the separating device G from the material, which now passes into the other chamber O to travel forward therein with a new supply of fresh water to finally pass through an outlet H in the head A to a suitable place of discharge.

In order to supply the fresh water, a Watersupply pipe I is connected with the casing G, the bottom of the said supply-pipe I having perforations I discharging into the upper end of the channel G so as to pass with the material down the channel G into the chamber O.

From the foregoing it will be seen that two washing and scouring devices are provided, connected with each other by a separating device, so that the material under treatment receives a preliminary washing and scouring in the chamber C, then the material and the dirty wash-water are separated from each other in the separating device G, and then the material is subjected to a second or final washing and scouring operation under the influence of fresh wash Water supplied through the pipe I.

It is understood that by providing the cylinders D and D and the inner surfaces of the chambers C and C with spiral flutes or ribs the material and water are caused to travel in a spiral direction from the inlet A" to the separating device G and in a like manner from the separating device to the outlet H.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A washing and scouring machine, comprising a cylindrical casing provided with spirally-arranged flutes and divided into a preliminary and a final cleansing chamber, means whereby to admit water and the material to be washed under pressure to the preliminarycleansing chamber, means connecting the preliminary-cleansing chamber with the finalcleansing chamber for separating the dirty Water from the material and for discharging the Water from the machine, means for admitting fresh water to the final-cleansing chamber, an outlet-chute for the final-cleansing chamber, and a cylinder provided with spirally-arranged flutes mounted to rotate Within the chambers.

2. A washing and scouring machine, comprising a preliminary and a final cleansing chamber, each of the chambers being provided with inlet and outlet chutes, the outlet-chute of the preliminary-cleansing chamber being at a higher level than the inletchute of the final-cleansing chamberand adjacent thereto, an inclined screen arranged between the outlet-chute of the preliminarycleansing chamber and the inlet-chute of the final cleansing chamber, means below the screen for discharging the dirty water from the machine, and means above the screen for admitting fresh Water to the final-cleansing chamber.

In testimony whereof I have signed my i name to this specification in the presence of two subscribing witnesses.

ROBERTO FRITZ EMIL OKRASSA.

WVitnesses:

AUGUST SoHARooH, F. BOTTE. 

